This circuit was found in a 1965 Electronics Design. The configuration can be applied to current circuits with modern equivalent transistors.
This circuit was found in a 1964 Electronic Design. The circuit makes use of transistors of the...
) This circuit was found in a 80’s Popular Electronics. It issues a warning signal with the signal...
This simple circuit uses a 200 uA microammeter of the type found as VU, being able to measure...